Motion-transmitting device.



No. 7|3,385. Patented'uuv. |902.

G. G. BEITZEL.

MOTION TBANSMITTING DEVICE.

(Application med nec. 1s, 1901.)

(No Indei.)

me News mens do, wmumcb, wAsnwcrou, n cA UNrrnD STATES.

PATENT GFFICE.

GEORG GOTTW'ALD BEITZEL, OF COPENHAGEN, DENMARK.

MOTION-TRANSMITTING DEVICE.

SPECIFICATION forming part of Letters Patent No. 713,385, dated November1 1, 1902.

Application filed December 18, 1901. Serial No. 86,383. (No model.)

To all whom t may concern:

Be it known that I, GEORG GOTTWALD BEITZEL, of Copenhagen, Denmark, haveinvented certain new and useful Improvements in Motion- TransmittingDevices Specially Adaptable for Sewing-BIachines, of which the followingis a specication.

In sewingnnachines with rotating shuttles it is very advantageous toimpart to the shuttle-shaft a variable rotating motion in order that theupper thread may have sufficient time to be drawn away from the catcheror the shuttle before the new stitch is made. Vhen the catcher ismounted upon the end of a vertical spindle which is driven from the mainshaft of the machine, which shaft is generally arranged horizontally,the abovementioned variable rotating motion of the catcher may beeffected by means of specially-shaped cog-Wheels. By such anarrangement, however, the various parts of the mechanism will besubjected to a considerable wear, and, moreover, the arrangement canonly be made with difficulty to secure noiseless working of the machine.These difficulties have all been overcome by the device for transmittingthe motion, forming the subject of the present invention, and in whichthe cog-wheels are replaced by a peculiar form of angle-lever capable ofturning around two axles at right angles to each other, the one arm ofsaid lever being connected with the driving-shaft, while the other armis connected with the catcher.

In the accompanying drawings, Figures 1 and 2 show one constructionalform of the device, seen in side and front elevation, respectively, theangle-lever of Fig. 2 being in different position from Fig. l.

dis the driving-shaft; l), the catcher,mount ed upon the end of thespindle c, which is at right angles with the shaft a. This latter shaftd as well as the spindle c are turnably mounted in bearings arranged ina bracket d, forming part of the machine-frame. Below the shaft a thebracket d carries a bolt c, on which a fork fis turnably arranged, saidbolt e constituting the axis of oscillation of the support or fork f.The two arms g of the forkfare provided with bearings for a rockingspindle 7i, carrying between the arms of the fork the angle-lever i 7o.The one arm t' of the angle-lever terminates in a ball m, capable ofmoving into a corresponding groove iu a disk n, fixed on the end of theshaft a. The arm 7o terminates in a ballo, movinginto a correspondinggroove in a disk p on the end of the spindle c. When the shaft o, andthe disk n are turned, the angle-lever c' 7o will oscillate as the forkf turns on the bolt e, and at the same time the angle-lever will turnwith the spindle 7L. The ball o will therefore travel in a curved path,and, moving freely in the groove of the disk p, it will impart arotating motion to this disk and to the catcher b. It will be seen thatthis motion will not be an even one and that the catcher will rotatewith the greatest speed when the ball m is nearest to the bolt e, whilethe speed will be slowest when the ball m is farthest away from the boltc.

Vhen the spindle c, as shown in Fig. 1, is not placed in the same planeas the forkf, the speed of rotation of the catcher may be still morevaried; but the ball o must then be able to move slightly forward andbackward in a radial groove q in the disk p.

Having now particularly described and ascertained the nature of the saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. In a motion transmitting device, the combination witha driving part and a driven part standing at right angles to each other,of a spindle, a rocking support mounted to turn freely on said spindleback and forth in one plane of motion, an angular lever having its endportions connected operatively with said driving and driven partsrespectively, and another spindle mounted in the support and having thelever fitted thereon, said lever being mounted in the support to turn ina direction at right angles to the plane of movement of the support.

2. In a motiontransmitting device, the combination with a driving partand a driven part standing at right angles to each other, of a 'fixedspindle, a forked support mounted on said spindle to oscillate freelyback and forth in one plane of motion, a spindle mounted in said supportat right angles to the fixed spindle, and a double-armed lever mountedon the spindle in said support and capable of an independent oscillationin a path at right IOO angles to the plane of movement at said support,the arms of said lever being operatively connected with the driving anddriven parts respectively.

3. In a motion-transmitting device, the combination of a socketeddriving-disk, a socketed driven disk whose axis is at right angles tothat of the driving-disk, a ixed spindle, a forked bracket mounted insaid fixed spindle adjacent to the driving-disk and adapted to oscillateon an axis parallel to that of said disk, another spindle mounted on theforked arm and arranged at right angles to the fixed spindle, and adouble-armed lever supported by said spindle in the bracket and turnableon an axis at right angles to that of the support, the arms of saidlever being provided with heads which are loosely fitted in the socketsof the driving and driven parts.

4. In a motion transmitting device, the combination of a driving-disk, adriven disk having a radial slot and standing at right angies to thedriving-disk, a spindle, a rocking support mounted on the spindle toturn freely back and forth in one plane of motion, another spindlelmounted in the support, and an angular lever provided with headed endsand mounted on the spindle carried by the support to turn in a directionat right angles to the plane of movement of the support, one headed endof the lever being connected loosely to the driving-disk and the head atthe other end of the lever fitting in the slot of the driven disk tohave free slidable travel therein radially to the disk.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing Witnesses.

GEORG GOTTWALD BEITZEL.

Witnesses:

I. HOFMAN BANZ, J. C. JAGOBSEN.

